However Relativierendes shortcoming is the lack of a locking mechanism. The cover is only and moves freely when wearing such stowage. This is the meaning of an envelope, namely the protection function, apparently not satisfied. Under the given circumstances I would never store the phone in a loose pocket or even together with other objects, because objects between cover and display fall and this could cause scratches. A significant design errors, prevent the actually far less quality competitive products. I therefore returned the envelope with regret.